Philip Drinker
Philip Drinker (1894 - 1972) was a chemical engineer, father of American Industrial Hygiene and inventor of the Drinker respirator in 1928 and pioneer
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John Haven Emerson
John Haven "Jack" Emerson (1906 – 1997) was an American inventor and humanist. Inventor of the Emerson Iron Lung in 1931, and holder of 35 medical based equipment patents